feat:heapmap with value;fix:qcustomplot warning

components/ffmsep/presist/presist.cc

@@ -0,0 +1,186 @@
+//
+// Created by Lenn on 2025/10/31.
+//
+
+#include "components/ffmsep/presist/presist.hh"
+
+#include "components/ffmsep/cpstream_core.hh"
+
+#include <chrono>
+#include <filesystem>
+#include <fstream>
+#include <iomanip>
+#include <system_error>
+#include <nlohmann/json.hpp>
+
+namespace ffmsep::persist {
+
+namespace {
+
+using nlohmann::json;
+
+json serialize_tactile_frame(const DecodedFrame& frame) {
+    json result = {
+        {"pts", frame.pts},
+        {"raw_frame", frame.frame.data},
+        {"pressures", frame.tactile_pressures},
+    };
+
+    const auto received = frame.received_at.time_since_epoch();
+    result["received_at_ns"] =
+        std::chrono::duration_cast<std::chrono::nanoseconds>(received).count();
+
+    if (frame.tactile_matrix_size) {
+        result["matrix"] = {
+            {"long_edge", frame.tactile_matrix_size->long_edge},
+            {"short_edge", frame.tactile_matrix_size->short_edge},
+        };
+    }
+
+    if (frame.tactile) {
+        const auto& tactile = *frame.tactile;
+        result["tactile"] = {
+            {"device_address", tactile.device_address},
+            {"response_function", tactile.response_function},
+            {"function", static_cast<std::uint8_t>(tactile.function)},
+            {"start_address", tactile.start_address},
+            {"return_byte_count", tactile.return_byte_count},
+            {"status", tactile.status},
+            {"payload", tactile.payload},
+        };
+    }
+
+    return result;
+}
+
+} // namespace
+
+bool WriteQueue::push(WriteRequest&& req) {
+    {
+        std::lock_guard<std::mutex> lock(mutex_);
+        if (stopped_) {
+            return false;
+        }
+        queue_.push(std::move(req));
+    }
+    cond_.notify_one();
+    return true;
+}
+
+bool WriteQueue::pop(WriteRequest& out) {
+    std::unique_lock lock(mutex_);
+    cond_.wait(lock, [&] {
+        return stopped_ || !queue_.empty();
+    });
+
+    if (queue_.empty()) {
+        return false;
+    }
+
+    out = std::move(queue_.front());
+    queue_.pop();
+    return true;
+}
+
+void WriteQueue::stop() {
+    {
+        std::lock_guard<std::mutex> lock(mutex_);
+        stopped_ = true;
+    }
+    cond_.notify_all();
+}
+
+JsonWritter::JsonWritter()
+    : write_thread_([this] { run(); }) {}
+
+JsonWritter::~JsonWritter() {
+    stop();
+}
+
+std::future<WriteResult> JsonWritter::enqueue(std::string path,
+                                              std::deque<std::shared_ptr<DecodedFrame>> frames) {
+    std::promise<WriteResult> promise;
+    auto future = promise.get_future();
+
+    WriteRequest request{std::move(path), std::move(frames), std::move(promise)};
+    if (!write_queue_.push(std::move(request))) {
+        WriteResult result{false, "writer has been stopped", request.path};
+        request.promise.set_value(std::move(result));
+    }
+
+    return future;
+}
+
+void JsonWritter::run() {
+    WriteRequest request;
+    while (write_queue_.pop(request)) {
+        try {
+            auto result = write_once(request.path, std::move(request.frames));
+            request.promise.set_value(std::move(result));
+        } catch (const std::exception& ex) {
+            request.promise.set_value(WriteResult{false, ex.what(), request.path});
+        } catch (...) {
+            request.promise.set_value(WriteResult{false, "unknown error", request.path});
+        }
+    }
+}
+
+WriteResult JsonWritter::write_once(const std::string& path,
+                                    std::deque<std::shared_ptr<DecodedFrame>> frames) {
+    if (path.empty()) {
+        return {false, "export path is empty", path};
+    }
+
+    json tactile_frames = json::array();
+
+    for (const auto& frame : frames) {
+        if (!frame) {
+            continue;
+        }
+        if (frame->id != CPCodecID::Tactile || !frame->tactile) {
+            continue;
+        }
+        tactile_frames.push_back(serialize_tactile_frame(*frame));
+    }
+
+    if (tactile_frames.empty()) {
+        return {false, "no tactile frames available for export", path};
+    }
+
+    json root;
+    root["codec"] = "tactile";
+    root["frames"] = std::move(tactile_frames);
+
+    std::filesystem::path fs_path(path);
+    if (fs_path.has_parent_path()) {
+        std::error_code ec;
+        std::filesystem::create_directories(fs_path.parent_path(), ec);
+        if (ec) {
+            return {false, "failed to create export directory: " + ec.message(), path};
+        }
+    }
+
+    std::ofstream stream(path, std::ios::binary | std::ios::trunc);
+    if (!stream.is_open()) {
+        return {false, "failed to open export file", path};
+    }
+
+    stream << std::setw(2) << root;
+    stream.flush();
+    if (!stream.good()) {
+        return {false, "failed to write export file", path};
+    }
+
+    return {true, {}, path};
+}
+
+void JsonWritter::stop() {
+    if (!stopped_.exchange(true)) {
+        write_queue_.stop();
+        if (write_thread_.joinable()) {
+            write_thread_.join();
+        }
+    }
+}
+
+} // namespace ffmsep::persist

components/ffmsep/presist/presist.hh

@@ -0,0 +1,86 @@
+//
+// Created by Lenn on 2025/10/31.
+//
+
+#ifndef TOUCHSENSOR_PRESIST_HH
+#define TOUCHSENSOR_PRESIST_HH
+
+#include <atomic>
+#include <condition_variable>
+#include <deque>
+#include <future>
+#include <memory>
+#include <mutex>
+#include <queue>
+#include <string>
+#include <thread>
+
+namespace ffmsep {
+
+struct DecodedFrame;
+
+namespace persist {
+
+struct WriteResult {
+    bool ok = false;
+    std::string error;
+    std::string path;
+};
+
+struct WriteRequest {
+    WriteRequest() = default;
+    WriteRequest(std::string p,
+                 std::deque<std::shared_ptr<DecodedFrame>> f,
+                 std::promise<WriteResult>&& pr)
+        : path(std::move(p))
+        , frames(std::move(f))
+        , promise(std::move(pr)) {}
+
+    WriteRequest(const WriteRequest&) = delete;
+    WriteRequest& operator=(const WriteRequest&) = delete;
+    WriteRequest(WriteRequest&&) noexcept = default;
+    WriteRequest& operator=(WriteRequest&&) noexcept = default;
+
+    std::string path;
+    std::deque<std::shared_ptr<DecodedFrame>> frames;
+    std::promise<WriteResult> promise;
+};
+
+class WriteQueue {
+public:
+    bool push(WriteRequest&& req);
+    bool pop(WriteRequest& out);
+    void stop();
+
+private:
+    std::mutex mutex_;
+    std::condition_variable cond_;
+    std::queue<WriteRequest> queue_;
+    bool stopped_ = false;
+};
+
+class JsonWritter {
+public:
+    JsonWritter();
+    ~JsonWritter();
+
+    std::future<WriteResult> enqueue(std::string path,
+                                     std::deque<std::shared_ptr<DecodedFrame>> frames);
+
+    void stop();
+
+private:
+    void run();
+    WriteResult write_once(const std::string& path,
+                           std::deque<std::shared_ptr<DecodedFrame>> frames);
+
+private:
+    std::thread write_thread_;
+    WriteQueue write_queue_;
+    std::atomic_bool stopped_{false};
+};
+
+} // namespace persist
+} // namespace ffmsep
+
+#endif // TOUCHSENSOR_PRESIST_HH